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Polyester resin, method of producing the same, composition for molded article and molded article

Active Publication Date: 2010-07-08
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]The present invention has been made in view of such background art, and an object of the present invention is to provide a novel polyester resin that can be used for producing a molded article excellent in impact resistance, and a method of producing the polyester resin.
[0008]Another object of the present invention is to provide various molded articles each excellent in impact resistance by using the above polyester resin.
[0015]According to the present invention, there may be provided a polyester resin excellent in impact resistance and suitable for various materials for producing molded articles, and a method of producing the polyester resin.
[0016]In addition, according to the present invention, there may be provided various molded articles each excellent in impact resistance by using the above polyester resin.

Problems solved by technology

However, it cannot be said that the improvement in impact resistance achieved by the method described in Japanese Patent Application Laid-Open No. 2007-146153 is always sufficient.

Method used

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  • Polyester resin, method of producing the same, composition for molded article and molded article
  • Polyester resin, method of producing the same, composition for molded article and molded article
  • Polyester resin, method of producing the same, composition for molded article and molded article

Examples

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example 1

Preparation of polyester resin (DEG (52%)-PEF) formed of poly(ethylene-2,5-furandicarboxylate) and poly(diethylene-2,5-furandicarboxylate)

[0108]A 1-L reaction vessel manufactured by SUS Corporation mounted with a temperature gauge and a stirring blade manufactured by SUS Corporation was prepared. Raw materials were loaded into the reaction vessel manufactured by SUS Corporation so that a ratio of diethylene glycol to 2,5-furandicarboxylic acid might be 52 mol %. In other words, 2,5-furandicarboxylic acid (312.2 g), ethylene glycol (309.4 g), diethylene glycol (110.9 g), a monobutyltin oxide catalyst (0.59 g), and a titanium-n-butoxide catalyst (0.59 g) were loaded.

[0109]The stirring of the contents was initiated while nitrogen was introduced into the reaction vessel manufactured by SUS Corporation. At the same time, the temperature of those contents was increased with a mantle heater. After the temperature in the vessel had reached 160° C., the temperature was held at the temperatur...

example 2

Preparation of polyester resin (DEG (80%)-PEF) formed of poly(ethylene-2,5-furandicarboxylate) and poly(diethylene-2,5-furandicarboxylate)

[0111]Preparation was performed in the same manner as in Example 1 except for the following: raw materials were loaded in such amounts that a ratio of diethylene glycol to 2,5-furandicarboxylic acid might be 80 mol %, in other words, 2,5-furandicarboxylic acid (312.2 g), ethylene glycol (274.5 g), diethylene glycol (170.6 g), a monobutyltin oxide catalyst (0.61 g), and a titanium-n-butoxide catalyst (0.61 g) were loaded. Thus, DEG (80%)-PEF was prepared.

example 3

Preparation of polyester resin (PEG (4%)-PEF) formed of poly(ethylene-2,5-furandicarboxylate) and poly(polyethylene-2,5-furandicarboxylate)

[0112]Preparation was performed in the same manner as in Example 1 except for the following: raw materials were loaded in such amounts that a ratio of polyethylene glycol to 2,5-furandicarboxylic acid might be 4 mol %, in other words, 2,5-furandicarboxylic acid (327.8 g), ethylene glycol (387.8 g), polyethylene glycol having a weight average molecular weight of 600 (50.4 g), a monobutyltin oxide catalyst (0.61 g), and a titanium-n-butoxide catalyst (0.61 g) were loaded. Thus, PEG (4%)-PEF was prepared.

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Abstract

Provide are a novel polyester resin that can be used for producing a molded article excellent in impact resistance, and a method of producing the polyester resin. The polyester resin has structural units represented by the following general formulae (1) and (2), and contains the structural unit represented by the general formula (2) at a content of 50.1 mol % or more to 99.9 mol % or less with respect to the total of the structural units represented by the general formulae (1) and (2). The method of producing a polyester resin, includes copolymerizing a furandicarboxylic acid or an ester thereof with ethylene glycol and diethylene glycol. In the formula, R1 represents an aromatic hydrocarbon group which may be substituted, or an aliphatic hydrocarbon group which may be substituted.

Description

TECHNICAL FIELD[0001]The present invention relates to a polyester resin useful for various resin materials, a method of producing the polyester resin, a composition for a molded article, and a molded article.BACKGROUND ART[0002]Polymer materials typified by, for example, polyolefin resin-, polyester resin-, polyamide resin-, polyacrylate resin-, polycarbonate resin-, and polyimide resin-based materials have been widely utilized as various industrial materials. Those general-purpose polymer materials are each excellent in mechanical physical properties such as heat resistance and impact resistance, but each hardly decompose under a natural environment, so each of the materials remains in the ground semipermanently when buried in the ground.[0003]Meanwhile, biodegradable materials have been attracting attention in recent years, and the development of biodegradable resins such as an aliphatic polyester resin has been actively performed. Plant-derived resins have been attracting attenti...

Claims

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Application Information

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IPC IPC(8): C08G63/12
CPCC08G63/676C08G63/672
Inventor ERITATE, SHINJI
Owner CANON KK
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